ADS7890IPFBRG4

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Data Acquisition - Analog to Digital Converters (ADC) semiconductor devices enable an analog signal to be converted into a digital equivalent for use in computer applications. The ADS7890IPFBRG4 is an advanced 14-Bit + Sign CMOS Analog-to-Digital Converter (ADC) with Serial Peripheral Interface (SPI) and Shutdown Control port. This ADC enables a variety of data acquisition applications and design solutions, primarily within the consumer, industrial, test and measurement, and medical markets.

The ADS7890IPFBRG4 Application Field:

The ADS7890IPFBRG4 is suitable for numerous applications across consumer, industrial, test and measurement, and medical markets. The device is integrated into many products such as testing and measurement equipment, data acquisition systems, consumer electronics, medical imaging, and mobile communication. This 14-bit ADC is designed for communication with a microcontroller, and allows for easy implementation into 8, 16 and 32 bit microcontrollers.

The device features low power consumption and a full power-down mode. It is also specified for operation over the industrial temperature range and supported by the many evaluation boards available.

ADS7890IPFBRG4 Working Principle:

The ADS7890IPFBRG4 is a monolithic integrated circuit consisting of low power CMOS logic and a low power operational amplifier (opamp). It includes an analog input multiplexer, a multi-bit Parallel-to-Serial Converter (PSC), an analog-to-digital converter (ADC), a reference buffer, a charge redistribution DAC, digital output buffer, SPI, and shutdown control port.

The analog signal is first amplified by an opamp, and then passed to a multiplexer, which selects one of two analog inputs. The multiplexer output is then converted to a binary output in the PSC, representing each bit of resolution from the ADC. This converted binary output is then passed to the ADC, which is a successive approximation register (SAR). The SAR will compare the multiplexer’s output to a reference voltage, and the comparison is made for each bit until the desired resolution is reached. The multiplexer can then switch to the second analog input and the process is repeated until both analog inputs have been sampled.

The ADC output is then sent to the digital output buffer and then to the SPI, which can be used to communicate with a microcontroller. The power-down mode of the device can be configured to provide the maximum power savings in the system. The device is also supported by the many evaluation boards available, allowing for easy integration into various applications.

In summary, the ADS7890IPFBRG4 is an advanced 14-bit + sign CMOS ADC with Serial Peripheral Interface (SPI) and Shutdown Control port. It is suitable for numerous applications across consumer, industrial, test and measurement, and medical markets. The device is based on a low power CMOS logic and a low power operational amplifier, and includes an analog input multiplexer, a multi-bit Parallel-to-Serial Converter, an analog-to-digital converter, a reference buffer, a charge redistribution DAC, digital output buffer, SPI, and shutdown control port. It features low power consumption and a full power-down mode and is also specified for operation over the industrial temperature range, supported by the many evaluation boards available.

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